Centrifugal cream-separator.



Q, 0. ANDERSON. CENTRIFU'GAL CREAM SEPARATOR.

APPLICATION FILED JULY. 2|, 1915.

Patented J an. 18,1916;

3 SHEETS-SHEET I.

c. 0. ANDERSON.

CENTRIFUGAL CREAM SEP ARATOR. APPLICATION FILED JULY 21, 1915.

Patented Jan. 18, 1916.

3 SHEETS-SHEET 2.

1 1 1 1; mm I i i a: k I \g 4 i L 1% 5 WT C 0. ANDERSON. CENTRIFUGAL CREAM SEPARATOR.

APPLICATION FILED JULY 21. 1915. q

' Patented Jan. 18, 1916.

3 SHEETSSHEET 3.

* n STAES CARL OSCAR ANDERSON, OF LANCASTER. PENNSYLVANIA, ASSIGNOR TO THE- CHAMPION BLOWER & FORGE 00., OF LANCASTER, PENN-,SYLVANIA, A COR- PORATION OF PENNSYLVANIA.

Specification of Letters Patent.

Patented Jan. 18, 1916.

Application filed July 21. 1915. Serial No. 41,140.

T 0 all whom it may concern Be it known that I, CARL OSCAR ANDER- sox, a citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certainnew 'and use Improvements in Centrifugal Cream-Separators; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention relates to centrifugal cream separators and more particularly to separators of the type in which a series of superposed conical separating-disks are employed together with a centrally-disposed feed-tube and distributing device adapted to evenly and uniformly distribute the whole milk as it issues through openings in said tube into the spaces between the separating disks.

The objects of the present invention are to provide a simple, ellicient, inexpensive and durable cream separator of the character referred to, adapted to evenly and uniformly distribute the milk between the separating disks of the liner in such manner that substantially the same amount of milk will be passed to and through each of the spaces between the disks and out at the upper end of the bowl at a substantially uniform rate of How or velocity so that the maximum separating efficiency will be realized in each space.

The invention will first be hereinafter more fully described, with reference to the accompanying drawings, which are to be taken as a part of this specification, and then pointed out inthe claims at the end of the description.

In said drawings, Figure 1 represents a vertical sectional elevation of a cream separator embodying my invention; some of the conical separating disks beingomitted to more clearly illustrate the interior con-.

struction; Fig. 2 is a transverse section taken on the line 22 of Fig. 1, Fig. 3 is a perspective view of the sleeve which coacts with the feed-tube in effecting a uniform distribution of the milk. Fig. i is a vertical sectional elevation illustrating a modification of the feed-tithe and co-acting distributing sleeve; the cylindro-conical casing or bowl and parts oi the liner being omitted; Fig. 5 is a plan view, partly in transverse section, of the parts shown in Fig. 4; Fig. 6 is a side elevation illustrating in full lines the distributing sleeve shown in Figs. 4 and 5 and one of the conical disks of the liner; the feed-tube being indicated in dotted lines; Fig. 7 is a plan view of the sleeve and conical disk shown in Fig. 6; Fig. 8 is a plan view of the conical disk shown in Figs. 6 and 7 detached; Fig. 9 is a vertical sectional elevation of amodifieation of the feed-tube and sleeve shown in Figs. 1 to 3; the lower part or base portion of the feed-tube being broken away; Fig. 10 is'a transverse section taken on the line 1010 of Fig. 9, Fig. 11 is a side elevation of the sleeve shown in Figs. 9 and 10 detached from the feed-tube; and Fig. 12 is a transverse section taken on the line 1212 of Fig. 11.

Referring to said drawings, in which the same reference letters are used to denote corresponding parts in different views, the

outer casing or bowl A preferably of cylinneck of the casing; said rim having an interior annular flange which fits closely around the neck of the uppermost separating disk or divider plate D so as to provide an annular groove or channel above. the neckof the bowl leading to a cream exit a in said rim through which the cream passes into a suitable receiver. The bowl neck is short, terminating at the base of the depending rim of the nut C, in which, below the cream exit, is or are formed or provided a milk exit or exits c. When the parts are. assembled as shown and the nut, C

screwed upon the feed-tube, the latter towithin a circumferential flange thereon, as is common in this class of devices. The conical base may be integral with the feedtube or fitted on an exteriorly threaded lower part thereof, between an annular shoulder and a nut screwed on the tube as shown in Fig. 1, and tinned together, so as to provide in effect a structure in which the tube and base are integral. The lower end of the feed-tube is provided with-the usual socketto receive the upper end of a vertical shaft or spindle upon which the bowl is supported as usual in this class of machines.

As shown in Figs. 1 to 3, the feed-tube B, is formed'or provided with a series of preferably equidistant, radially extend ng w ngs or blades b, the outer edges of which are formed with flanges b which extend at an angle, preferably at right angles, to the main portion and in the direction of rotation; the wings I), being arranged beside a corresponding series of wings or blades e,

projecting radially from a sleeve E, slidably fitted on the feed-tube, so as to-provide a vertically disposed channel between each pair of wings, one on the feed-tube and the other on the sleeve, to receive the milk exuding through suitable slots .or apertures 1n the feed-tube, and when said channel is filled themilk will flow through narrow vertical slits between the outer edges of said wings into the spaces between the separating disks or plates of the liner. The feed-tube is preferably provided with slots or apertures which extend from the bottom of the milk passage therein to a point near the upper end of the distributing sleeve E WlllCh fits closely around the feed-tube at the top,

' and between the wings b, and is formed or provided at its lower end with a disk 6 which is grooved on its underside to fit upon an annular flange on the feed-tube; said disk being slotted as at e to receive the wings I) and adapt it to he slid on the feedtube longitudinally thereof in assembling or disassembling the parts; and in assembled position its lower end rests on the annular shoulder or flange vat the apex of the coneshaped base or at the junction of said base with the feed-tube, whereby the lower ends of the distributing channels are normally closed. The wings of the feed-tube and distributing sleeve preferably extend beyond the cream zone, which lies within the circle described by the margins of the openings through the apices of the conical plates of Y the liner, which plates-arev notched, as shown to receive each pair of :wings, thereby preventing rotation of said plates independently of the feed-tubes.) The vertically disposed channels formed by the radially projecting wings of the feed-tube and distributing sleeve are'a'dapted to cause the milk to travel'along the front wall bof the wingb, in respect to the direction of rotation, so that themilk will be uniformly distributed over the surface of said wall throughout the length of the channel before it reaches the slit between the outer edges of the wings,jth-rough which it passes into be seen, the distributing channels are closed at both ends, so that no milk entering the feed tube can escape, except through the vertically-disposed slits. or interstices be tween the radially extending wings of the feed-tube and distributing sleeve. Any desired number of such wings or blades may be employed, though three have given the best results and only three are shown. Within the bowl A, and around the distributing sleeve are placed a series of frusto-conicaldisks D each having acylindrical opening at its apex of such size as to adapt it-to fit over the distributing sleeve surrounding the feed-tube and leave an unobstructed space around the sleeve between the distributing channels for the passage of cream ascending tothe cream exit. j The disks D may be slightly separated. and held apart by any well known means such as employed in this class of devices. The uppermost separating disk Dhas a tubular neck or extension d i which is slightly larger than and surrounds the feed-tube withinthe neck'of the casing,

and fits closely against an annular rib or flange a, on the'interior of the casing-neck, passage'therein as at a leading to the milk at its upper end, having a. skimmed milk to provide a cream passage th-erethrough,

exit a, and is also closely fitted within an annular rib or flange 0 on the interior of the rim of the nut C which cuts ofi communication between the interior of the nut and the interior of the casing neck, except through the neck of the divider-plate or disk D, within which is fitted a detachable ring ti -having a vertical cream passage 03 therein. The divider-plate or disk D may have the usual ribs thereon to space it from the circumferential wall of the inclosed casing or bowl and provide a passage for skimmed niilk up through the casing neck.

In Figs. 4 and 5, I have shown a feed tube B having four radially projecting wings and provided with spaced apertures through which the milk is discharged into a I space between'it and a distributing sleeve E also having radially; extending wings WhlCh lIl'thlS instance are straight, so that the milk issuing through the apertures in the feed-tube enters a vertically disposed channel of arc-shaped form between. the feed-tube and distributing sleeye, and flows out through the space between the wings or flanges of the tube and sleeve into the spaces between the separating disks; the wings or flanges of the feed-tube being longer than the flanges of the distributing sleeve to engage notches in the separating disks and hold the latterin a relatively fixed position and prevent rotation thereof independently of the feed-tube.

In Figs. 6, 7 and 8 I have illustrated a modification of the distributing sleeve, which consists of a tubular body E having vertical slots therein to receive the wings of the feedtube and adapt it to be slid upon said tube, and integral radially projecting wings or flanges c for co-action with the radially projecting wings of the feed-tube on which it is fitted; said wings or flanges 6 being formed by cutting the tube andturning the cut part outwardly parallel with the wings of the feedtube; the latter being indicated in dotted lines in Fig. 6. One of the plates of the liner which may be integral with the distributing sleeve or separate therefrom is shown in side View in Fig. 6, and in plan view in Figs. 7 and 8; the latter showing the plate detached so as to more clearly illustrate its construction.

In Figs. 9 to 12 is shown a modification of the feed-tube and sleeve, which, in effect, is a mere transposition of these parts as shown in Figs. 1 and 3. In this instance the feed-tube B has integral radial wings without the angular terminal flanges shown in Figs. 1 to 3, while the wings of the sleeve are formed with terminal flanges which are turned toward the adjacent wings of the tube in the same manner and for the same purpose as the flanges on the wings of the tube in the form first described. As will be seen, the distribution of the whole milk is the same in both constructions. The letter G denotes the usual space blocks between the separating disks, and H denotes a series of registering apertures arranged one above another, or in line, so as to form a straight passage vertically through the series of disks parallel with the axis of the bowl, to receive a tool for holding the disks together when they are being washed.

Having thus described my invention what I claim and desire 'to secure by Letters Pattween adjacent wings having vertically disposed slits at the outer edges, of the wings through which the milk is discharged; said tube having discharge apertures leading into said channels.

2. In a centrifugal cream separator, a feed-tube havingintegral radially projecting wings'or blades, and a tubular co-acting member slidablyfitted on said tube and having integral radially projecting wings or blades arranged beside but slightly separated from the wings of the tube so as to provide vertically-disposed channels between slits at the outer edges of'the wings through 'which'the milk is discharged; said tube having discharge apertures leading into said channels. i

3. In a centrifugal cream separator, a feed-tube having vertical radially projecting wings or blades, and a sleeve slidably fitted on said tube having "vertical radially projecting wings or blades arranged beside but adjacent wings havingvertically-disposed slightly separated "from the wings of the tube; one set of wings each having a terminal, flange turned toward a wing of the other set but slightly separatedtherefrom ti) provide a narrow vertically-disposed discharge slit between said flange and the outer edge of an adjacent wingand an enlarged channelbetween the tube and flange; said tube having discharge apertures leading into'said channels.

4. In a centrifugal cream separator, a feeding and distributing device comprising a feed-tube having integral radially-project ing wings or blades and a co-actingmember slidably fitted on said tube and having integral radially-projecting wings or blades arranged beside but slightly separated from the wings of the tube so as to provide vertically-disposed channels between adjacent of the tube so as to provide vertically-disposed channels-between adjacent wings; the wings of the tube having terminal flanges turned toward the wings of the sleeve'but sli htly separatedv therefrom. thereby providing enlarged vertically disposed channels between adjacent wings and slits at the outer edges thereof through which the milk is discharged in a thin sheet.

6. In a centrifugal cream separator. a centrally-disposed feed-tube having vertical radially-projecting wings and discharge ing device comprising a sleeve slidably fitted upon said tube and having integral radiallyprojecting wings arranged beside the wings of the tube but slightly separated therefrom to provide enlarged vertically disposed distributing channels, between adjacent wings and narrow vertical slits between the outer edges of adjacent wings, together with superposed separating disks or plates supportedion said sleeve and revoluble therewith spaced to receive therebetween the, milk issuing through said slits.

8. A feeding and distributing device for cream separators comprising a centrallydisposed feed tube having discharge ports therein and radial. wings having terminal flanges extending at an angle thereto in the direction of, rotation of the tube, and a tubular co-acting member having radial wings arranged beside but slightly sepa rated fromth'ewings of the tube, whereby vertically-disposed channels are formed with narrow slits atthe outer edges of said wings; said channels being closed at both ends;

9. In a cream separator, the combination of a bowl having a tubular neck, a cen-- trally-disposed feed tube having discharge ports therein, and a series of superposed slightly separated conical disks supported on said feed-tubeand-revoluble therewith; the uppermost disk having a tubular neck Copies of this patent' may be obtained for closely fitted within the bowl neck and su1- rounding but slightly separated from" the feed-tube, a nut screwed on said tube having a depending rim with milk and cream outlets therein separated by close contact of the rim with the neck of said uppermost disk, there being an annular space around said neck within the neck of the bowl communieating with said skimmed milk outlet above the upper end of the bowL 10. In a cream separator, a bowl or casing having a tubular necln and a flaring base, a centrally-disposed feed-tube protruding through said neck, and having a flaring base on which said bowl is seated, a nut screwed on said feed-tube having a depending rim engaging the upper end of the bowl neck and separated from said tube so as to provide an annular channel therein,

and a liner composed of superposed conical disks surrounding said tube; the uppermost disk having a tubular neck which protrudes through the neck of the bowl into the depending rim of the nut tightly fitting the interior wall thereof and the interior of the neck of the casing, but separated from the tube to provide a assage for the ascending cream; the rim of the nut having a cream exit at the top and a milk exit at the bottom, said exits being separated by an annular flange fitting tightly against the'neck of said uppermost disk, and a detachable ring in the neck of said uppermost disk closely fitting around the feed tube and having a cream passage for the ascending cream; an 1 annular space being provided within the neck of' the bowl in communication with said milk exit and with the space between said uppermost disk and the inner surface of the bowl.

In testimony that I claim the foregoing as my own, I aflix my signature in presence of two witnesses.

CARL OSCAR ANDERSON.

Witnesses:

CHAS. E. Lone, C. B. LONG.

five cents each, by addressing the Commissioner oLPatents, Washington, D. 0.

I It is herebygcertifieiithatiri-Letters Patentho."1;1'68,455, granted Janilery .18, 1916;1 1pon the aippiication of Carl Oscar Anderson, of Laricaster, Pennsylvania, for an improvement in Centrifugal Cream-Separators, an error appears in the printed specification requiring correction as follows; Page 2;strike out lines 106110 and insert the: following: to provide a'cream passage therethrough, and fits closely against an annulmrib or flange a, on the interior of the casing-neck, at its upper end, having a skimmed milk passage therein as at a, leading to the milk; and that the said Letters Patent should be read with this correctioli therein that the slime may conform v to the record of the case in the Patent Office.

Signed an'dsealetl this 1st day of February, D., 1916.

[emu] J T. NEWTON,

Acting Commissioner of Patents. Cl. 23329 

